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marcelgoh
  • Member for 4 years, 9 months
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6 votes
1 answer
375 views

Proving that a set generates $\Gamma_0(4)$

5 votes
1 answer
74 views

Two poset properties: are they related?

4 votes
0 answers
48 views

Formula for $r$-graph homology

4 votes
1 answer
119 views

Prove alternate form of Littlewood-Offord

3 votes
2 answers
244 views

Three-term Motzkin recurrence

3 votes
0 answers
32 views

"Big-$O$ version" of graph counting lemma?

3 votes
2 answers
381 views

Finding poles of $f(z) = z/(1-\cos z)$

3 votes
0 answers
35 views

Sufficient conditions for retractions along simplices to result in "nice" complex

2 votes
0 answers
57 views

Does a Freiman $2$-isomorphism have to send $0$ to $0$?

2 votes
2 answers
170 views

Stuck in a step of a proof that cyclotomic polynomials are irreducible.

2 votes
1 answer
125 views

Sperner family with small sets and large sets

2 votes
2 answers
119 views

Showing ${\sin mx\over\sin x}=(-4)^{(m-1)/2}\prod_{j=1}^{(m-1)/2}\left(\sin^2x-\sin^2{2\pi j\over m}\right)$ for odd $m>0$ (from Serre's "Arithmetic")

2 votes
0 answers
82 views

Composing quaternion multiplications doesn't seem to get element of ${\rm SO}(4)$

2 votes
1 answer
234 views

Number of zeroes of a modular form on $\Gamma_0(N)$ on fundamental domain

2 votes
1 answer
91 views

A subsymmetric basic sequence that is not weakly null is seminormalised

2 votes
1 answer
26 views

Relationship between the sizes of orbits of nodes

2 votes
1 answer
88 views

Trouble understanding how a big-o bound proves a limit

1 vote
1 answer
174 views

If the limit of the difference of two random variables goes to 0, are the limits of their expectations the same?

1 vote
1 answer
136 views

Is there any way to tackle this integral (generating functions)?

1 vote
3 answers
131 views

Orbit of a point under the action of the stabiliser of another point

1 vote
0 answers
122 views

Quotient field $G$-invariant ring is a ring of rational functions

1 vote
0 answers
20 views

Continuity/differentiability of a certain multivariable quotient

1 vote
3 answers
165 views

Does a finite field ${\bf F}_q$, viewed as a vector space over another finite field, have a basis of squares?

1 vote
1 answer
47 views

Conditioning reduces entropy, directly from Khintchine--Shannon axioms

1 vote
0 answers
44 views

Solution verification for question involving finite topological space

1 vote
1 answer
99 views

Convolution and difference convolution adjoint

0 votes
1 answer
47 views

Constant $c$ such that a certain function goes to $0$.

0 votes
3 answers
50 views

Missing step in showing that $\sqrt{|x|} \sin(\sqrt{|x|})$ is uniformly continuous

0 votes
1 answer
50 views

Conditionally independent coordinates relative to sum

0 votes
1 answer
157 views

Using generating functions to solve divide-and-conquer recurrences